I have a cubical (3D) workspace of side 3 meter. I want to use a sensor to get the location of a point inside the space which is the location of the sensor with respect to any corner or an arbitrary point. Which sensor can i exactly use for this application?
The Best answer i got was HC-SR04 ultrasound sensor. I just need to know if i can have the sensor module at one end(Which will be taken as the orgin) of the cube and a detector module that can be moved inside the cube so as to get its location.
UWB time-of-flight. Not cheap yet, multiple base stations are needed to triangulate.
IR beacons and IR computer vision using multiple cameras. Commonly used for drone-swarm control.
Time-of-flight using ultrasound beacon and multiple receiving transducers. As sound travels slowly and
time-of-flight is therefore much easier to measure, this is more amenable to low-budget experimentation.
This is always a tough one. I've seen similar requests but in a room.
Can you tell us what your definition of "exactly" is? I'll warn you, my standard response to "as close as possible" would be 3 meters * square root of 2.
In other words, if you can't define your ultimate goal and acceptable goal, I'll not waste my time.
This is a shot in the dark.
What about six HC-SR04 modules (or better), one placed on each side of a cube.
The cube contains the arduino stuff.
Hang the cube, so it is at the desired point in space.
Then calculate the distances from the walls, floor, and ceiling.
Smooth surfaces with no obstructions assumed?
The spec sheet says the max range for the HC-SR04 is 4m. I've only used it for very close range applications and it is gets within a cm or two (mostly!).
Rikku_joseph:
I have a cubical (3D) workspace of side 3 meter. I want to use a sensor to get the location of a point inside the space which is the location of the sensor with respect to any corner or an arbitrary point. Which sensor can i exactly use for this application?
The Best answer i got was HC-SR04 ultrasound sensor. I just need to know if i can have the sensor module at one end(Which will be taken as the orgin) of the cube and a detector module that can be moved inside the cube so as to get its location.
You need at least four sensors for 3D positioning.
They can listen to the same transmitter, but the HC-SR04 is not omnidirectional. You need to point it roughly to the sensor, and finally you need a way to communicate to the receiver when you sent the pulse so it can calculate how long it took to arrive.